petroleum rig石油钻机
petroleumn.石油
petroleum polluted water石油污水
Petroleum Supply Command石油供应指挥部
petroleum chromatography石油色层
petroleum production base石油基地
Petroleum disperse system石油分散体系
petroleum-bearing fluid含油气流体
petroleum testing methods石油试验法
petroleum-based economy石油经济
petroleum-polluted soil石油污染土壤
petroleum sulfur analyzer石油含硫量分析器